Governance & Accreditation
Working to the well Microgeneration Certification Scheme (MCS) where a strong emphasis is placed upon accurate forecasting the technology underpins our commerical proposals. In the age where computer modeling & variables can be skewed to show more 'favorable' results the need to be sure of the investment is crucial. Incorrect forecasting can result in claims being made against the installer by the system owner to recoup lost revenue. Their irradiance table attached (Bristol is 5E) based on last 10 years of meteorological data provides a conservative forecast with the orientation of the array away from south and pitch being the only variables.
Irradiance Datasets for MCS Website
The annual generation has been calculated as per MCS guidance using the calculation below.
Annual AC output (kWh) = kW x kWh/kW x SF
e.g. 27,000 = 30 kW x 900 kWh/kW x 1 SF
This system performance calculation has been undertaken using estimated values for array orientation, inclination or shading. Actual performance may be significantly lower or higher if the characteristics of the installed system vary from the estimated values.
The performance of solar PV systems is impossible to predict with certainty due to the variability in the amount of solar radiation (sunlight) from the location to location and from year to year. This estimate is given as a guidance only. It should not be considered as a guarantee of performance.
A shade assessment has been conducted via a site-survey which has produced the below chart.
This shade assessment has been undertaken using the standard MCS procedure – it is estimated that this method will yield results within 10% of the actual annual energy yield for most systems.
The performance of a solar PV system depends on the amount of sunlight that falls on the PV modules. The map below shows the incident solar radiation in the UK over the course of one year. A solar PV system in the south west of England will generate around 30% more than one in Scotland.
Yearly Total of Global Horizontal Irradiation UK & Ireland
Solar Irradiance Trends
Component warranty and performance
Warranties for the product but also the performance of the solar modules. Use of Bloomberg Tier 1 panels as bankability guide for investors. Claims against performance levels out to 25 years inclusive of degradation
Computer simulation software
The use of technology such as PV Sol enables the simulation and modeling of system performance to be run in parallel with the MCS process. This helps forecast your solar project yield giving you the piece of mind on your renewable energy investment.